G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 20/10 (2006.01) H04N 5/926 (2006.01) H04N 5/7826 (2006.01) H04N 5/783 (2006.01)
Patent
CA 2124391
ABSTRACT OF THE DISCLOSURE A digital video tape recorder records compressed image signals which include both intra-frame encoded image slices and motion compensated encoded image slices. The recorder receives the encoded data either in a format in which a portion of each frame is encoded using intra-frame techniques or in a format in which an entire frame of a group of frames is encoded using intra- frame techniques. Shuffling circuitry in the recorder recognizes the intra-frame encoded slices and reorders the slices as they are recorded such that a substantial portion of the intra-coded image slices will be recovered both in normal play mode and in trick play mode. For the one signal, these slices represent the intra-coded portion of each frame; for the other signal they represent the one intra-coded frame in the group of frames. In one embodiment of the invention, the trick- play mode is a three-times forward speed mode and the intra-coded slices are arranged such that substantially all of the intra-coded slices are recovered in trick-play mode.
Kim Hee-Yong
Naimpally Saiprasad V.
Fetherstonhaugh & Co.
Matsushita Electric Industrial Co. Ltd.
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